ultima

May 2, 2015

Just had a brainstorm for an adventure game since atari never completed the swordquest series how about an adventure where you collect the swordquest prizes or has someone already done something similar?

May 2, 2015

I just downloaded it and the sound seems to be way off on my homebrew

April 30, 2015

hmm not sure if anyone on here could help but i've found a nasty bug in the game that I can't figure out. if you beat the game around 4 times in a row the players lifebar changes color then on beating the next game the lifebar starts cycling colors as the player moves eventually crashing the game after reaching the winning condition. Any help would be greatly appreciated!

Here's the source (sorry the comments are not up to par)

April 26, 2015

Ok build 7 is in the first post has random placement of objects it also gets more action as you complete the sword

next up I would like to work more on enemy locations, ai paths and make some tweaks to the world layout

April 10, 2015

nice game I like the dungeon view and animation

April 10, 2015

Update**

Latest version is in 1st post

added back screens removed from the first version

added another weapon option in the difficulty switches

fixed a few small bugs like the death screech

and rearranged the code layout

oh and after re-reading the viking myths I renamed the game to fit closer to a real viking theme

in the next update I'll be working on random placement of objects and enemies

March 31, 2015

I made an update it has random terrain's collision fix and I added one difficulty switch (right side I think) to control enemy speed A difficult/B easy. Update is in the first post. Will add more later...

March 19, 2015

thanks I went with the multiplication and the byte saver

if joy0left then _Bit3_Flip_p0 = %00000000 : _Bit2_Flip_p1 = %00000000
if joy0right then _Bit3_Flip_p0 = %00000100 : _Bit2_Flip_p1 = %00000100

works like a charm and saved a couple bytes too

March 18, 2015

sorry I will simplify the question. Is addition faster than multiplication?

example:

(moosegizzards * 2) is the same as (moosegizzards + moosegizzards)

so I am figuring that in 6502 asm that one of these statements will compile a smaller faster solution.

March 18, 2015

I was on RT's site looking at the sprite flipping example and got a question about this

   dim _Bit2_Flip_p1 = a
   dim _Bit3_Flip_p0 = a

   player0:
   %01111110
   %11111111
   %00011111
   %00000111
   %00011111
   %11111111
   %01111110
end

   player1:
   %10101010
   %11111111
   %10000011
   %10101011
   %11111111
   %10010011
   %11011011
   %10010011
   %01111110
end

   COLUBK = 0

   player0x = 68 : player1x = player0x + 20

   player0y = 55 : player1y = 55



__Main_Loop

   COLUP0 = $1E : COLUP1 = $AE

   if joy0left then _Bit3_Flip_p0{3} = 0 : _Bit2_Flip_p1{2} = 0
   if joy0right then _Bit3_Flip_p0{3} = 1 : _Bit2_Flip_p1{2} = 1


   rem  ````````````````````````````````````````````````````````````````
   rem  `  Note from SpiceWare:
   rem  `
   rem  `  REFPx registers ignore everything except the value in bit 3.
   rem  `
   REFP0 = _Bit3_Flip_p0


   rem  ````````````````````````````````````````````````````````````````
   rem  `  Note from SpiceWare:
   rem  `
   rem  `  Multiplying by 2 will shift all bits to the left one
   rem  `  position, so what was in bit 2 ends up in bit 3.
   rem  `
   REFP1 = _Bit2_Flip_p1 * 2


   drawscreen


   goto __Main_Loop

this section:

   rem  ````````````````````````````````````````````````````````````````
   rem  `  Note from SpiceWare:
   rem  `
   rem  `  Multiplying by 2 will shift all bits to the left one
   rem  `  position, so what was in bit 2 ends up in bit 3.
   rem  `
   REFP1 = _Bit2_Flip_p1 * 2

is using multiplication so my question is would it have any impact on the number of cycles by just adding _Bit2_Flip_p1 to itself? I modified it and compiled it and found it still takes the same amount of bytes and produces the same result via:

REFP1 = _Bit2_Flip_p1 + _Bit2_Flip_p1

I also found that by changing this it also produces the same effect and uses 7 bytes less

   if  joy0left then _Bit3_Flip_p0 = %00000000 : _Bit2_Flip_p1 = %00000000
   if joy0right then _Bit3_Flip_p0 = %00000100 : _Bit2_Flip_p1 = %00000100
   rem  `  REFPx registers ignore everything except the value in bit 3.
   REFP0 = _Bit3_Flip_p0 + _Bit3_Flip_p0
   rem  `  Multiplying by 2 will shift all bits to the left one
   rem  `  position, so what was in bit 2 ends up in bit 3.
   REFP1 = _Bit2_Flip_p1 + _Bit2_Flip_p1

although I am not sure if it saves anything on cycle counting

March 18, 2015

I like this game. I collected all the pieces and almost made it back to the ol' A-frame, but got hit by a giant spider (I called it a spider!?)! I've played it few times now. I like the Zelda-like screens and the search and find aspects of the game. Good stuff!

Thanks Papa in fact it is a giant spider! The other enemy is only known as "the thing from the forest"

If you want to get rid of the sticky walls, this might help:

randomterrain.com/atari-2600-memories-batari-basic-commands.html#sprite_collision_example

Wow that code is rather math heavy for collision I'll see if i can break it down into caveman code lol

** got this working thanks you can rub all over the walls now!! unfortunately a side effect was the size went -84 bytes of code left so I ripped out some screens and it worked great

March 15, 2015

8-27-18 Rev 2 Last Build

NTSC
The Sword Of SURTR.bin

Loki the god of mischief has stolen the sword of the fire giant Surtr

and hidden it away!! Take control of Haldor and find the lost blade then

seek a way into Valhalla to bring it to Odin himself...

Will you journey through the ice caverns of the Dwarves? Or seek out the

Mysterious Old Man up in the mountains? Or command your Dragon ship through

a deadly Maelstrom in search of unsung treasures? The choice is yours!!

Press the fire button to begin a new game and use your weapon. Simply walk

over items to pick them up, most have a visible effect on the player. Search

the world carefully, secret entrances long hidden may contain wondrous

treasures or deadly creatures.

A viking action/adventure for the Atari VCS and Flashback Portable.

Seek the Sword of Surtr and bring it to Valhalla. Beware of Vikings,

wolves, ravens and traps. Seek powerful artifacts to aid you in your quest.

Use with Joystick controller.
Console switches used:
-Reset starts new game from Titlescreen
-Left Difficulty
A-Player has only 1 life
B-Player has infinite continues and retains inventory items.

March 4, 2015

Thanks R. T. much appreciated.

March 3, 2015

Can data be used in a if then statement?

Such as:

Genericsub

If var{4} Then data

1,2,3,4

End

Else data 2,3,4,5

End

Return

February 19, 2015

Would this help?

 dim fire = a
 c{1}=0
 c{2}=0
 player1x = 50 : player1y = 50
 player0x = 70 : player0y = 50
 e=60
 fire = 0
loop
   COLUBK = $00 : COLUP1= $5A : COLUP0= $0A
 if joy0up then player0y = player0y - 1
 if joy0down then player0y = player0y + 1
 if joy0left then player0x = player0x - 1              
 if joy0right then player0x = player0x + 1
 if player0x > player1x then fire = 1 : c=%00000010
 if  player0x < player1x then fire = 1 : c=%00000001
 if fire = 1 && c{0} then missile1x = player1x - e : missile1y = player1y - 1
 if fire = 1 && c{1} then missile1x = player1x + 1 + e : missile1y = player1y - 1
 if e>60 then e=0 : fire = 0 : missile1x = 0 : missile1y = 0
 e=e+1
 player1:
 %00000000
 %00000000
 %00000000
 %00111100
 %01111110
 %00000000
 %01111110
 %00011000
end
 player0:
 %11100000
end
 drawscreen
 goto loop

spaceship code.bas.bin

February 12, 2015

it fights the player too much but might make an excellent pinball machine

February 3, 2015

The part where your checking the f variable could be done as a subroutine then you could also remove each player graphic out as a sub called by the sub check on f. It should free up the cpu from reading all the player graphics and instead call one check on f and send it to the appropriate frame then return back in the loop..

January 26, 2015

I'd like to know more about how you plan on depicting the Colossi battles. That's the heart of the game, in my opinion.

I'm not sure how I'll do that without testing several possibilities but I think first off it will require a Genesis controller or dual joysticks (Raiders of the Lost Arc style) for actions selection. It will require at the least a gravity engine with some inertia attacks by the colossi. My biggest concern atm is how to code the light rays from the ancient sword to "find" the colossi, and how Dormin will convey info to the Wander...in bB

January 25, 2015

Been working on some ideas to bring this into some kind of playable form.

Here's a few working screenshots any thoughts?

October 27, 2013

Ah ok I think I found the one Loon mentioned

http://atariage.com/forums/topic/172686-destiny-wip/page-2

I guess Bogax had mentioned this in another thread thanks everyone

edit**Here is the thread I was looking for http://atariage.com/forums/topic/203631-drawing-playfields-from-data-statements/

October 27, 2013

I remember reading this thread but the one I was trying to recall had mentioned theloon's example (or demo) that the player moved around rooms and the playfield had 3 interchangeable pieces top, center, and bottom maybe his WIP Rogue engine I think.

October 27, 2013

Yeah I think it was using DATA ..and it was a fixer for a routine you used

October 27, 2013

I can't recall where I was reading this but the topic discussed was about writing chunks of data to replace a piece of playfield. The new thing mentioned replacing a routine the loon made for drawing pieces of playfield.